17(43)
tightness
Picture 2-4
：
Drying Filter
2.2.4 Thermal Expansion Valve
1) The thermostatic expansion valve can throttle and depressurize the
refrigerant and regulate the refrigerant flow into the evaporator.
2) The heat expansion valve is installed in front of the evaporator.
Picture 2-5
：
Thermal Expansion Valve
2.2.5 Evaporator
1) The evaporator is a device that outputs the refrigerant, which absorbs the
heat of the cooled object in the evaporator, so as to achieve the refrigerating
purpose.
2) Our company uses the horizontal shell and tube evaporator.
Picture 2-6
：
Evaporator
2.2.6 High and Low Pressure Controller
1) The high and low pressure controller is used to control the working pressure
